**QUESTION**

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Why are the variable units in the **Calculation Editor** different than the units chosen for my calculated variable? For example, I choose units of **mm** for both thickness and width and units of **mm ^{2}** for my calculated variable

**Area**yet the

**Calculation Editor**in TestSuite is showing

**m**instead of

^{2}**mm**

^{2}^{ }(Figure 1).

Figure 1 – Different units between user defined units and in the **Calculation Editor** window

**ANSWER**

** **

Although the operator can use the variable display unit **mm ^{2}**, the

**Calculation Editor**is showing

**m**because TestSuite uses

^{2}**m**internally as the unit for area when performing calculations. The software knows to convert between

^{2}**m**and

^{2}**mm**.

^{2}

If you set the dimensions on all the variables, signals, and calculation parameters properly, and not put constants directly in the calculations, everything works out properly. You must take precaution when putting constant values into calculations. You must think carefully about what the units are of those constants. This is why the recommendation is to NOT put constants into calculations. Rather, create variables or calculation parameters for the constants, and set the dimensions properly on those objects.

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